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envknob: support changing envknobs post-init

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Updates #5114

Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-09-14 12:49:39 -07:00
committed by Brad Fitzpatrick
parent 33ee2c058e
commit 74674b110d
31 changed files with 311 additions and 167 deletions
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4
net/netcheck/netcheck.go
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@ -43,7 +43,7 @@ import (
// Debugging and experimentation tweakables.
var (
debugNetcheck = envknob.Bool("TS_DEBUG_NETCHECK")
debugNetcheck = envknob.RegisterBool("TS_DEBUG_NETCHECK")
)
// The various default timeouts for things.
@ -210,7 +210,7 @@ func (c *Client) logf(format string, a ...any) {
}
func (c *Client) vlogf(format string, a ...any) {
if c.Verbose || debugNetcheck {
if c.Verbose || debugNetcheck() {
c.logf(format, a...)
}
}